prov:value
| - The antibacterial enhancing agent generally contains at least one delivery-enhancing group, which is preferably acidic such as sulfonic, phosphonic, or more preferably phosphonic or carboxylic, or a salt thereof, e.g. alkali metal or ammonium and at least one organic retention-enhancing group, such groups having the formula --(X)n --R wherein X is O, N, S, SO, SO2, P, PO or Si or the like, R is hy
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